用进废退说 :use and disuse theory
相关例句：
大脑为了克服干扰,只能强迫斜视眼不看东西,斜视眼接受不到物象的刺激,视功能发育停止,视力停止在一个初级发育阶段,“用进废退”,久而久之,斜视眼视力进一步下降,矫正视力也无法提高,形成弱视（详见后述）.
Cerebrum is disturbed to overcome,can force cross-eye not to see a thing only,cross-eye accepts the stimulation that is less than content elephant,inspect functional development to stop,eyesight stops to be in phase of a primary growth,"Use into useless retreat " ,as time passes,cross-eye eyesight drops further,correctional eyesight also cannot rise,form amblyopia (after detailed sees,narrate) .
